Evidence map›Paper›PMID 27756821›Full record

ArticlePlant physiology2016

Dynamic Interplay between Nucleoid Segregation and Genome Integrity in Chlamydomonas Chloroplasts.

Masaki Odahara, Yusuke Kobayashi, Toshiharu Shikanai, Yoshiki Nishimura

Open access · hybridAbstract read
In one paragraph

Article in Plant physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.7field-weighted citation impact, top 25% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. Factors Affecting Organelle Genome Stability inPlants (Basel, Switzerland) · 2020
    Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Masaki OdaharaDepartment of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan (M.O., Y.K., T.S., Y.N.); and.
Yusuke KobayashiDepartment of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan (M.O., Y.K., T.S., Y.N.); and.
Toshiharu ShikanaiDepartment of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan (M.O., Y.K., T.S., Y.N.); and.
Yoshiki NishimuraDepartment of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan (M.O., Y.K., T.S., Y.N.); and yoshiki@pmg.bot.kyoto-u.ac.jp.
Kyoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The chloroplast (cp) genome is organized as nucleoids that are dispersed throughout the cp stroma. Previously, a cp homolog of bacterial recombinase RecA (cpRECA) was shown to be involved in the maintenance of cp genome integrity by repairing damaged chloroplast DNA and by suppressing aberrant recombination between short dispersed repeats in the moss Physcomitrella patens Here, overexpression and knockdown analysis of cpRECA in the green alga Chlamydomonas reinhardtii revealed that cpRECA was involved in cp nucleoid dynamics as well as having a role in maintaining cp genome integrity. Overexpression of cpRECA tagged with yellow fluorescent protein or hemagglutinin resulted in the formation of giant filamentous structures that colocalized exclusively to chloroplast DNA and cpRECA localized to cp nucleoids in a heterogenous manner. Knockdown of cpRECA led to a significant reduction in cp nucleoid number that was accompanied by nucleoid enlargement. This phenotype resembled those of gyrase inhibitor-treated cells and monokaryotic chloroplast mutant cells and suggested that cpRECA was involved in organizing cp nucleoid dynamics. The cp genome also was destabilized by induced recombination between short dispersed repeats in cpRECA-knockdown cells and gyrase inhibitor-treated cells. Taken together, these results suggest that cpRECA and gyrase are both involved in nucleoid dynamics and the maintenance of genome integrity and that the mechanisms underlying these processes may be intimately related in C. reinhardtii cps.

Indexed as

Genome, ChloroplastGenomic InstabilityCell NucleusChlamydomonasChloroplastsChromosome SegregationDNA, ChloroplastDNA GyraseGene Knockdown TechniquesRec A RecombinasesSubcellular FractionsTopoisomerase II InhibitorsDNA, ChloroplastDNA GyraseRec A RecombinasesTopoisomerase II Inhibitors

Identifiers

PMID27756821
PMCPMC5129732
OpenAlexW2532875338

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.